/*---------------------------------------------------------------------------*\
  =========                 |
  \\      /  F ield         | OpenFOAM: The Open Source CFD Toolbox
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    \\  /    A nd           | Copyright (C) 2011-2024 OpenFOAM Foundation
     \\/     M anipulation  |
-------------------------------------------------------------------------------
License
    This file is part of OpenFOAM.

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    under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

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    ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
    FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
    for more details.

    You should have received a copy of the GNU General Public License
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\*---------------------------------------------------------------------------*/

#include "SyamlalViscosity.H"
#include "mathematicalConstants.H"
#include "addToRunTimeSelectionTable.H"

// * * * * * * * * * * * * * * Static Data Members * * * * * * * * * * * * * //

namespace Foam
{
namespace kineticTheoryModels
{
namespace viscosityModels
{
    defineTypeNameAndDebug(Syamlal, 0);
    addToRunTimeSelectionTable(viscosityModel, Syamlal, dictionary);
}
}
}


// * * * * * * * * * * * * * * * * Constructors  * * * * * * * * * * * * * * //

Foam::kineticTheoryModels::viscosityModels::Syamlal::Syamlal
(
    const dictionary& coeffDict
)
:
    viscosityModel(coeffDict)
{}


// * * * * * * * * * * * * * * * * Destructor  * * * * * * * * * * * * * * * //

Foam::kineticTheoryModels::viscosityModels::Syamlal::~Syamlal()
{}


// * * * * * * * * * * * * * * * Member Functions  * * * * * * * * * * * * * //

Foam::tmp<Foam::volScalarField>
Foam::kineticTheoryModels::viscosityModels::Syamlal::nu
(
    const volScalarField& alpha1,
    const volScalarField& Theta,
    const volScalarField& g0,
    const volScalarField& rho1,
    const volScalarField& da,
    const dimensionedScalar& e
) const
{
    const scalar sqrtPi = sqrt(constant::mathematical::pi);

    return volScalarField::New
    (
        IOobject::groupName
        (
            Foam::typedName<viscosityModel>("nu"),
            Theta.group()
        ),
        da*sqrt(Theta)
       *(
            (4.0/5.0)*sqr(alpha1)*g0*(1 + e)/sqrtPi
          + (1.0/15.0)*sqrtPi*g0*(1 + e)*(3*e - 1)*sqr(alpha1)/(3 - e)
          + (1.0/6.0)*alpha1*sqrtPi/(3 - e)
        )
    );
}


// ************************************************************************* //
